Works black tie dinner

We went to her firms black tie dinner and party. The first photo was taken before we went early evening, she was wearing this dress with a thong underneath. We both had a great time and plenty to drink. When we got home early the next morning I said to take a few more photos as she looked so good and got undressed. She smiled and said, then I've got a little surprise for you. As she took her dress off her thong was missing ! It turns out she had been fucked by a few of her colleagues during the evening. When I thought she was going to the bathroom she was, with them. One of them got a souvenir ! I got her to turn round and show me her body they had had.